Alkali Granit
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Ig. Home | Simp.Class. | Advanc.Class. | Alpha.List | Bowen's Reac.Srs. | ID Keys | Extrus/Intrus | Tect. | Self Tests ALKALI GRANITE (detail) Return To Whole Image Another Specimen Return To Classification; Pdf Version Typical Minerals QUARTZ > 20% ORTHOCLASE is greater than Plagioclase Mafics - < 10% Detail Description In this detail the pinkish colored orthoclase stands out clearly, but quartz is also common (clear, glassy, no cleavage; for example the grain on the bottom, just left of center.) Mafic (black)minerals are rare (<10%) in granites. The mafic mineral is most likely biotite with a few grains of amphibole too. Return To Whole Image Return To Classification; Pdf Version LSF Home | Geology Web Sites | Courses | JMU Geology Last Update: 9/29/00 e-mail: ([email protected]) Page 1 of 1 Untitled 6/5/2006 file://D:\ILANK%20POENYA\BACKUP%20DATA%20ILANK\Literatur%20Batauan%20...
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Transcript of Alkali Granit
Ig. Home | Simp.Class. | Advanc.Class. | Alpha.List | Bowen's Reac.Srs. | ID Keys | Extrus/Intrus | Tect. | Self Tests
ALKALI GRANITE (detail) Return To Whole Image
Another Specimen
Return To Classification; Pdf Version
Typical Minerals QUARTZ > 20% ORTHOCLASE is greater than Plagioclase Mafics - < 10%
Detail Description In this detail the pinkish colored orthoclase stands out clearly, but quartz is also common (clear, glassy, no cleavage; for example the grain on the bottom, just left of center.) Mafic (black)minerals are rare (<10%) in granites. The mafic mineral is most likely biotite with a few grains of amphibole too.
Return To Whole Image Return To Classification;
Pdf Version
LSF Home | Geology Web Sites | Courses | JMU Geology Last Update: 9/29/00 e-mail: ([email protected])
Page 1 of 1Untitled
6/5/2006file://D:\ILANK%20POENYA\BACKUP%20DATA%20ILANK\Literatur%20Batauan%20...
